Line Class Reference

#include <Line.h>

Public Types
typedef GlobalVector	DirectionType
typedef GlobalPoint	PositionType

Public Member Functions
GlobalPoint	closerPointToLine (const Line &aLine) const
DirectionType	direction () const
GlobalVector	distance (const Line &aLine) const
GlobalVector	distance (const GlobalPoint &aPoint) const
	Line ()
	Line (PositionType &pos, DirectionType &dir)
PositionType	position () const
	~Line ()

Private Attributes
DirectionType	theDir
PositionType	thePos

Detailed Description

A line in 3D space.

Definition at line 10 of file Line.h.

Member Typedef Documentation

DirectionType

typedef GlobalVector Line::DirectionType

Definition at line 13 of file Line.h.

PositionType

typedef GlobalPoint Line::PositionType

Definition at line 12 of file Line.h.

Constructor & Destructor Documentation

Line() [1/2]

Line::Line ( )

inline

Definition at line 15 of file Line.h.

{}

Line() [2/2]

Line::Line ( PositionType &  pos, DirectionType &  dir  )

inline

Definition at line 18 of file Line.h.

: thePos(pos), theDir(dir.unit()) {}

~Line()

Line::~Line ( )

inline

Definition at line 20 of file Line.h.

{};

Member Function Documentation

closerPointToLine()

GlobalPoint Line::closerPointToLine ( const Line &  aLine ) const

inline

Definition at line 27 of file Line.h.

References direction(), Vector3DBase< T, FrameTag >::dot(), position(), theDir, thePos, and cms::cuda::V.

Referenced by AnalyticalTrajectoryExtrapolatorToLine::extrapolateSingleState().

                                                         {
    GlobalPoint V = aLine.position();
    GlobalVector J = aLine.direction();
    GlobalVector Q = theDir - J.dot(theDir) * J;
    double lambda = Q.dot(V - thePos) / Q.dot(theDir);
    return thePos + lambda * theDir;
  }

direction()

DirectionType Line::direction ( ) const

inline

Definition at line 25 of file Line.h.

References theDir.

Referenced by closerPointToLine(), distance(), and TSCBLBuilderWithPropagator::operator()().

{ return theDir; }

distance() [1/2]

GlobalVector Line::distance ( const Line &  aLine ) const

inline

Definition at line 35 of file Line.h.

References Vector3DBase< T, FrameTag >::cross(), direction(), position(), theDir, thePos, unit(), and cms::cuda::V.

Referenced by btagbtvdeep::TrackPairInfoBuilder::buildTrackPairInfo(), and IPTools::jetTrackDistance().

                                                 {
    GlobalPoint V = aLine.position();
    GlobalVector J = aLine.direction();
    GlobalVector P = (theDir.cross(J)).unit();
    GlobalVector D;
    D = P.dot(thePos - V) * P;
    return D;
  }

distance() [2/2]

GlobalVector Line::distance ( const GlobalPoint &  aPoint ) const

inline

Definition at line 44 of file Line.h.

References Vector3DBase< T, FrameTag >::dot(), theDir, thePos, PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

                                                         {
    GlobalVector P(aPoint.x(), aPoint.y(), aPoint.z());
    GlobalVector T0(thePos.x(), thePos.y(), thePos.z());
    return T0 - P + theDir.dot(P - T0) * theDir;
  }

position()

PositionType Line::position ( ) const

inline

Definition at line 24 of file Line.h.

References thePos.

Referenced by closerPointToLine(), distance(), and IPTools::jetTrackDistance().

{ return thePos; }

Member Data Documentation

theDir

DirectionType Line::theDir

private

Definition at line 52 of file Line.h.

Referenced by closerPointToLine(), direction(), and distance().

thePos

PositionType Line::thePos

private

Definition at line 51 of file Line.h.

Referenced by closerPointToLine(), distance(), and position().